34 lines
532 B
C
34 lines
532 B
C
#include <fcntl.h>
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#include <unistd.h>
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#include <stdio.h>
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int main(void){
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int fd = open("./test/fileat", O_RDWR | O_SYNC);
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if(fd == -1){
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printf("Error in opening file fileat.\n");
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}
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char buff[1024];
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ssize_t rbit = read(fd, buff, 1024);
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if(rbit > 0)
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buff[rbit] = '\0';
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printf("%ld %s\n", rbit, buff);
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off_t off = lseek(fd, 0, SEEK_END);
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printf("offset: %ld\n", off);
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char buff2[32] = "Hello World!";
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ssize_t wbit = write(fd, buff2, 13);
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printf("wbit: %ld\n", wbit);
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return 0;
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}
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